Comparison of Expansive Pedicle Screw and Polymethylmethacrylate-Augmented Pedicle Screw in Osteoporotic Sheep Lumbar Vertebrae: Biomechanical and Interfacial Evaluations

• Da Liu ,

  Contributed equally to this work with: Da Liu, Yi Zhang

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Yi Zhang ,

  Contributed equally to this work with: Da Liu, Yi Zhang

  Affiliation Affiliated Stomatological Hospital, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Bo Zhang,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Qing-yun Xie,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Cai-ru Wang,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Jin-biao Liu,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Dong-fa Liao,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Kai Jiang,

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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• Wei Lei ,

  * E-mail: leiweispine@yahoo.cn (WL); xianmingpan@yahoo.cn (XP)

  Affiliation Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi′an, Shaanxi Province, P.R.China

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• Xian-ming Pan

  * E-mail: leiweispine@yahoo.cn (WL); xianmingpan@yahoo.cn (XP)

  Affiliation Department of Orthopaedics, General Hospital of Chengdu Military Region, Chengdu, Sichuan Province, P.R.China

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